256475681

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{331}}^1\times {\mathrm{347}}^1$

素因数の和:725

約数の個数: 32

約数和(自身を含む): 332743680

約数和(自身を除く): 76267999

約数列:

[1, 7, 11, 29, 77, 203, 319, 331, 347, 2233, 2317, 2429, 3641, 3817, 9599, 10063, 25487, 26719, 67193, 70441, 105589, 110693, 114857, 739123, 774851, 803999, 1263427, 3330853, 8843989, 23315971, 36639383, 256475681]

約数ペア:

[(1, 256475681), (7, 36639383), (11, 23315971), (29, 8843989), (77, 3330853), (203, 1263427), (319, 803999), (331, 774851), (347, 739123), (2233, 114857), (2317, 110693), (2429, 105589), (3641, 70441), (3817, 67193), (9599, 26719), (10063, 25487)]